The span is too short, lengthening it will not hurt.

The airfoil I recommend is the NACA-2412. It is what the Cessna 150, a very venerable aircraft uses. Also, it is the airfoil being used on the RP4 Rensselaer composite bushplane. I can send you pictures of the scale R/C model, if you'd like. Another way to reduce weight is with compsites. They're very easy to make, especially for flat fueslage panels.

Lastly, I am designing a "water bomber" for the AIAA's Design/Build/Fly competition. I can help you with sprayers and such.

But my first recommendation is to lengthen the span and add a 2 or 3 degree dihedral. This will give you the stability you need.


Ed Gorcenski
Aeronautical Engineering
Rensselaer Polytechnic Institute